Malicious PDF — malware analysis report

Static analysis result for SHA-256 a056aea1ea3ac932…

MALICIOUS

PDF

77.5 KB Created: 2021-01-28 06:19:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a0ce602d6287894d450ae2c3131608ca SHA-1: 311005358991ecee5d5fa2e9a73b6944cb0602f3 SHA-256: a056aea1ea3ac932db74b7af4d74619439821000badd7ada16a0cfe670472999
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/aws?utm_term=alimentos+organicos+definicion+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469104/normal_5ff5f97f7239f.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/hfH7AP4/meaning_in_webster_dictionary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fd7df164aed9.pdfIn PDF document text
    • http://muvibigi.22web.org/41694692239.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414172/normal_5fcc65b151fa7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_6005a34bc993b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5fd77c24c1aa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485695/normal_600c12737e508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412165/normal_5fd0d40a21f59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488317/normal_5fc6f0cde8c8d.pdfIn PDF document text
    • http://dusosax.66ghz.com/lamerafekakusimegen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vopapatadape.epizy.com/tonufemezedoviwexezados.pdfIn PDF document text
    • http://feselipalez.epizy.com/nitolidekekebizek.pdfIn PDF document text
    • http://favukimasinete.rf.gd/xejofovago.pdfIn PDF document text
    • http://bimemelal.epizy.com/50189210747.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDA 5464 bytes
SHA-256: 4db8c4448185923e54063d08f5aefbd5ac1c088b65c50867e17b07e9f3d72963
font_01_sfnt_off00010059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10059 12100 bytes
SHA-256: 6ba93919c7b5ae961d4ec5216ec4eadfc0fa85a4f759ff16749c44f4833d49d9